Lubricating device



Oct. 5, 1926. 1,602,376

R. T. HAZELTON LUBRICATING DEVICE Filed August 22, 1924 4 Sheets-Sheet 1 @iE-*Hi 11 f4 um I,

Oct. 5, 1926. 1,602,376

R. T. HAzELToN LUBRICATING DEVICE Filed August 22, 1924 4 Sheets-Sheet 2 fi if 2,/ if

j u M *n I n Oct. 5, 1926.

R. T. HAZELTON LUBRICATING DEVICE Filed August 22, 1924 4 Sheets-Sheet 3 oct. 5, 192e. 1,602,376

R. T. HAZELTON LUBRICATING DEVICE Filed August 22, 1924 4 Sheets-Sheet 4 Patent @et 192e.

ROBERT T. HAZELTON, OF CINCINNATI, OHIO, SSIGNOR TO THE CINCINNATI SHPER COMPANY, OF 4 CINCIlI'NATI, OHIO, A CORPORATION OF OHIO.

LUBRICATING DEVICE.

Application filed August 22, 1924. Serial No. 783,656.

This invention relates generally to improvements 'in lubricatin systems and is particularly adapted to de iver oil in proper uantity to various parts of a machlne or like device, only, while the machine is in operation. Y

The invention has been shown applied for the lubricating of a metal shaper of the reciprocating ram type, for which machine the invention is particularly adapted, the embodiment shown having been speciall designed for such a lmachine. It wil be readily apparent, however, that the general principles of the invention may be applied to various types of machine tools.

One object of the invention is to provide a system wherein an auxiliary central distribnting reservoir of small capacity is ar ranged to deliver oil in relatively small quantities, as by drops, to the parts to be lubricated, only while the machine is in operation, the capacity of thereservoir be- 1n for this purpose limited so that when the luricant supply thereto is cut oil or interrupted the reservoir drains into a return pipe and immediately ceases to function as a distributor, thus preventing waste by leakage when the machine is idle.

I have found that with the ordinary t pe of force feed lubrication or sight feed 1u rication either too much oil is delivered to certain parts, or the system becomes clogged and the proper amount of oil is not delivered.

' For that reason in the present desi the lubricant is delivered by gravity to a parts to be lubricated, this delivery by gravity being regulated by wicks adapted to siphon lubricant from a small rela reservoir, above the parts, which is supp ied by a pump placed in a main reservoir at a lower elevation. The small relay reservoir receives the pumped oil or lubricant and the lubricant is maintained at a level within this reservoir below that of the discharge o enings leading therefrom, in which the wic s are placed, and at a level above an overilow passage which lleads the oil back to the main distributing reservoir. The relay reservoir is further provided with an opening leading from its bottom downwardly and into this overflow passage whereby when the oil supply to the relay reservoir is cut 0E the residual oil in the reservoir is completely drained O into a return pipe lor conduit.

Thus provision is made for substantially immediately cutting olf the supply of oil to the parts to be lubricated as soon as the machine ceases to operate, the pump in this instance being operated from a shaft formlng part of this transmission and speed change mechanism.

Another object of the invention is the provision of means for delivering oil to re ciprocatlng parts from a stationary reservoir mounted independently of said arts and particularl to rovide a device o this nature adaptedy to deliver oil through the ram of a metal Shaper, through the link connecting the ram with the pitman and to the pitman slide and pivots.

Another object of the invention is to provide a sight feed drip lubricatingsystem of the above nature adapted to deliver lubricant into distributing tubes in a quantity exactly proportional to the needs of the parts to be lubricated and to further rovide a compact distributing reservoir o small capacity arranged for delivering variable quantities of lubricant according to the need.

Other ob'ects and certain advantages will be more fu ly set forth in the description of the accompanyingdrawings forming a part of this speciication in which:`

Figure 1 is an end view of a Shaper, parts being broken away to particularly show the path of the overflow or return lubricant from the auxiliary to the main distributing reservoir,

Figure 2 is a side elevation partly in section, illustrating the crank gear, pitman and pitman connection to .the ram, as well as the main distributing p reservoir and pump therein.

Figure 3 is adetail longitudinal section showing the telescopically arranged lubri cant delivery conduit for supplying lubricant to the'nut and link of the ram.

Figure 4 is a cross section on linea-4, Fig. 3, illustrating the relation of the nut and showing the passages through the clamp block.

Y Figure 5 is an enlarged longitudinal section of the telescoping members.

Figure 6 is'a side elevation of the pump, partly in section.

Figure 7 is a detail sectional elevation taken online 7-7 of Fig. 6.

Figure 8 is a plan section taken through the glass annulus or window of the auxiliary relay reservoir.

Figure 9 is a similar view through'the upper compartment thereof. i Fi ure 10 is a vertical section approxlmate y on line 10-10 of Fig. 9: Figure 11 is a vertical sectlon approximately on line 11-11 of Fig. 8,

Figure 12 is a vertical section approximately on line 12--12 of Fig. 8.

Figure 13 is an enlarged detail sectlon through one of the siphon delivery passages showing the wick siphon in .place and illustrating its mode of attachment.

For purposes of simplification only those portions of the shaper are illustrated which are, to be lubricated or which function to receive, convey, circulate or store the lubricant.

The main frame 1 is mounted upon a suitable base and has thev usual dove-tail guideways or rails 2 for longitudinally slidably supporting the reciprocable ram 3. Both the frame and ram are of hollow construction, various reinforcing anges and partition walls being provided respectively to give rigidity to the frame and provide compartments for housing various parts of the mechanism.

The frame at the rear end and lower part is partitioned to provide a gear housing compartment 5 adapted for completely and separately housing the transmission and speed change gearing which drives the crank gear, and this compartment acts as a main distributing and receiving reservoir from which, as the lowest point of the system, the oil is pumped to the highest point, and to which an overflow unused portion of the same returns. @nly the main driving shaft 6 is shown, the omission of the other elements of the gearing being deemed advisable to avoid unnecessary detail, particularly 1n view of the fact vthat the gearing is fully illustrated and described in applicants copending application for improvements in shapers filed July 21, 1922.

Keyed to the shaft 6 is a gear 7, in this case a worm gear, which meshes with a corresponding gear of a pump mounted within the reservoir, which pump will be fully described.

The crank gear 10 has a lateral, hollow, cylindrical extension 11 rotatably journaled in a horizontally disposed bearing sleeve 12 removably non-rotatably held in an opening provided in the side wall of the frame, this bearing being extended beyond the end of the cylindrical extension to form a housing 13 acting both as an intermediate catch and overflow basin for the lubricating system,

and for enclosing portions of the carriage feed transmission mechanism, certain elements of which are lubricated from above and certain other elements, generally indirecaer@ cated at 14, in the lower part of the casing,

dipping into and being partially submerged in the lubricant at thebottom of the casing 13, from which lower point the oil overflows into the pump reservoir 5, in a manner to be fully described.

The ram is reciprocable by a pitman 15 which is pivoted at its lower end to the frame as at 16, the lower end being provided with a hub through which the pivot passes and the pivot having its opposite end engaged in bearings in the opposite side walls ofthe frame.' 'llhe pitman has the form of a frame-like casting suitably ribbed to give rigidity, having its upper' end bifurcated as at 17 to receive and pivot one end of a link 18 secured by the pivot 19, the opposite 'end of the link being pivotally connected as at 2O to a nut or shackle block 21 adjustably enga ed with horizontal longitudinal guides 22 within the ram, said nut being traversed and in threaded engagement with a screw 23 which when rotated causes adjustment of the nut relative to and lengthwise of the ram. The nut is provided with an upwardly extending terminally threaded rod 25 which extends through a longitudinal slot 26 at the upper side of the ram, and through a clamp block 30 which acts as a lubricant conveyor having intersecting passages therethrough for conveying lubricant to parts therebelow, in a manner more fully described, lin threaded engagement with the upper end of the rod is a'clamp nut 31 which engages the clamping block 30 and is adapted to clamp the nut 21 and block 30 against movement after adjustment. The nut provides means for adjustably connecting the ram and pitman, and for changing their relation to obtain varying degrees of overhang at the forward end of the ram with respect to the work table.

'llhe quantity and rate of How of lubricant to the parts to be lubricated is obtained and controlled by means of an auxiliary or relay reservoir placed at the highest point of the system, into which the lubricant is forced by means of a pump disposed in a main reser-I llt) tially vertical above the reservoir 5, and has ments, the upper of which has a small cubical capacity. A diametrically disposed elongated depression 42 is formed in the upper side of the partition and a vertically disposed integral extension 43 rises from the bottom of this de ression to a point level with the horizonta top of the casing. The extension is bored axially to provide a vertical passage or duct 44 `traversing extension and partition. A. series of vertical concenvtrically spaced passages 45 are formed in and through the partition laterally of the depression, by boring and counterboring, thus providing passages opening above the bottom of the depression and slightly below the top of the casing, the upper enlarged por-l tions o the passages providing pockets for catching drippings of lubricant from pas sages in a small reservoir thereabove, in a manner to be described. In addition to the counterbored passages just mentioned, the partition is further bored vertically also laterally of the longitudinal depression and concentrically with the casing axis to provide catch depressions 46, one of which is adapted to overflow into the other through a connecting channel 4 7, this for the purpose of doubling the oil supply to the nut, link and pitman. Through an exterior horizontally disposed boss of the casing extends a bore 48 intersecting one of the depressions, this bore being enlarged at its outer end by counterboring and threaded for engagement by a coupling gland 49 connected with which is a pipe 50, extending horizontally rearwardly of the frame parallel with the ram slideway, and bent upon itself to provide a parallel leg 51 extending in the opposite 'direction and adapted to enter telescopically within a companion larger tubular chamber section, mounted non-movably within the bore at the extremity of the block 30 attached to the ram an'd parallel to the ram.

The upper side of this casing is machined to provide a seat 52 upon which is placed a gasket and upon the gasket is seated a glass cylinder 53 providing a circumferential sight opening through which the operation of the system can be observed at this point. Mounted upon this glass annulus is a 'relatively small cylindrical reservoir 55,`closed v at the top by a removable cover 54, circularly grooved upon its bottom for sealing engagement with the glass ring and having a diametrically disposed depression 56 in the upper side of its bottom wall and a boss 57 rising at one side within the depression and also projecting below the bottom as at 58, for sealing engagement with the corresponding extension43 of the lower casing, which extension, as before mentioned, rises from the diametric depression therewithin.

This extension of the upper reservoir has` two bores, 59, 60 therethrough, one, 59, registering with the corresponding bore 44 of the lower extension just mentioned to` form a reservoir intake connecting directly with the force pump through the tube, and the other, 60, aligning with the opening 6l connected by the pipe 64 with the opening 62 in the frame above the crank journal. The two bores 59, 60 communicate'with the interior of the reservoir at relatively different levels but both at lower levels than a series of vertically disposed concentrically arranged passages 65, 66, corresponding to those in the lower casing, in alignment therewith and adapted to discharge thereinto. There are in this instance six of these passages counterbored in a manner similar to those of the lower casing. The upper casing is removably attached by screws 67.

In this design seven overflow passages are provided, four of which are in communication with slide faces of the ram guides, 'two adapted to supply the pitman, pivots and connections between the same and the ram, and one, a return or overiiow, connected with the casing surrounding portions of the crossfeed mechanism adjacent and laterally of the crank gear including the crank gear bearing. The casing acts as an intermediately disposed overflow reservoir leading through an intermediate `compartment to the main distributing reservoir.

The auxiliary'r'elay reservoir is urposely made of small capacity and is a apted to regulate the 'distribution of lubricant through separate channels, the number of channels substantially corresponding to the number of stations or parts to which the lubricant is to be delivered. Thus. the lubricant is delivered to the uppermost reservoir vin which its level is maintained at a point between the overflow 60, and delivery pas sages 65, 66.

In order to provide a drop feed through the passa es 65, 66, wicks 71 are placed as shown in igure's l1 and 13 in each distributing passage of the top reservoir and act `to Siphon the lubricant after 'the pump ceases to operate. Y l

Inasmuch as the passages are connected with those parts of the machine to which the lubricant is to be delivered in relativelyv smaller quantit than to other parts, the wicks act to de iver lubricant into the passages drop by drop only, and the level of the oil in the reservoir is not allowed to reach the level of the intake ends of the passages. Whenever the oil supply in the chamber 55 is interrupted, the chamber is quickly drained through the oriiices 60, 578t whereby delivery of oil is also interrupted through the Siphon-like wicks. While oil is being supplied to the reservoir the level of oil is maintained at some point between the intake end of the overflow opening 60 and the level of the intake en-dsof the bores 65, 66.

In order that the wicks may properly Cil function as capillary siphons each must be retained in position with its delivery end below the level of the intake end and for this urpose each wick is knotted as shown at 1a, a wire 71b'being engaged in the knot, extended through the assa e, and crimped on the lower side. See ig. 13.) 'lhe knot is of less diameter than the counterbored portion ot the passage and said knot is held against the bottom of the passage as shown. lin order to prevent clogging at the lowest end of the wick, small counterbores forming cavities 66a are made within the bottom wall of the larger bore, these bores being axially related as shown in Fig. 9. l

The intake end of the overflow or return conduit within the relay reservoir is at a lower level than the intake ends of the opening or openings of the 'ravity supply conduits but above the level of the intake passage to the reservoir and the oil level is normally kept at a point between these levels.v lhus the oil is delivered only to the upper levels through the siphon wicks, one wick being provided, as before stated, for each conduit.

VAn important feature of the invention is `the manner of oiling the link and rocker arm, by means of Va telescopic conduit connecting a stationary reservoir mounted upon the frame, with a member carried by the ram, whereby the lubricant connection is maintained at all times. For this purpose the block 30 is longitudinally bored as at 35, (see Fig. Zl), and has an upturned enlarged extension at its outer end which has a relatively larger cross-bore 36 therein, enlarged intermediate its ends as at 37 to form an annular chamber or passage. These passages are communicating., the bore 35 being tangent to the bore 37 at the lower side thereof, so that lubricant may be delivered by gravity from the cross-chamber to the longitudinal passage. Moreover, the longitudinal passage is disposed at one side of the block and connects with the chamber at that en-d nearest the tool end of the ram permitting the rod 25 to pass through the block 30 at one side of the channel 35. A short passage 75 intersects the passage 35 at a point vertically over the nut 21, and a tube 76 connects this short passage with a vertical passage 77 of the nut. rllhe nut is provided with a bore 78 of larger diameter than the screw 23 through which the screw extends and this bore is intersected by the vertical passage 77 as shown in Figs. 3 and 4,which extends vertically throu h the nut from top to bottom portions of t e passage lying at opposite sides of the screw. A circumferentially grooved collar 79 is disposed loosely about the screwl shaft and is heldimmovably within the bore in registration with the two ryeoasro tends a longitudinal passage 81u tangent to and partially intersecting the periphery of the cross pin 20, for oiling the same, suitable absorbent packing or lwick being placed within the opening to prevent leakage. At the opposite end of the groove or channel oa the link is a vertical bore `82 leading to the bore through which the pin 19 passes, through which the oil reaches the pin and overows laterally therefrom into a cavity 83 formed centrally at the bottom of the bifur-V cation o the pitman. A bore 84 leads from this cavity downwardly and opens into an elongated slot or opening extending longitudinally of the pitman, the sides of which form guides for the crankpinblock 85. This block has a cavity 86 in its upper face and passages 87 leading laterally from the cavity to the slide faces as well`as a passage 88 leading downwardly therefrom tangent to and partially intersecting the crank pin 89. 'llhis passage may be iilled with a wood wick to prevent any undue supply of lubricant to the crank pin. r1`he cross-bore of the block through which the crank pin extends is grooved longitudinally as at 90, in its upper side to provide lateral outlet for the oil or lubricant which, after escape therefrom, flows down the slide aces into a cavity 91 at the lower end of the guide slot through which cavity extends vertically downwardly a passage 92 leading to the pivot 16.

1n order to deliver the lubricant from the lower compartment of the oil tower to the passage 37 of the block 30 while the ram is reciprocating, the open end leg 51 of the bent tube 5() is telescopically engaged within a closed end tube of substantially larger diameter adjustably mounted within and movable with the block 'in the following manner:

rlhe larger tube 95 as a closed chamber is engaged through an opening 36 at the end of the'block 30 (see Fig. 5),and secured by set screws 96. The tube extends beyond the block toward the forward'end ot the m'achine, and has an opening 97 adjacent its rear end lying Within and communicating with the chamber 37. 'llhe outer forward end of the tube is closed by a plug 98. rllhe relative diameters of the tubes are such that a circumferential channel is formed therebetween and the open end inner tube 5l slides in a liber or wooden bushing 99`V held lin place by steel washers on both. sides of lll the bushing. The tube 51 is free to move in this bushing. The bushing dams the oil in the larger tube 95.

By means of this telescopic arrangement, a properamount of oil to the nut, link and pitman is assured at all times and a relatively largerl amount of oil is obtained through the ducts 66, 46, for this purpose.

The frame is bored diagonally at 63 and the tube 64 connects therewith. Vertically below the discharge end of this opening the bearing sleeve is longitudinally grooved or channeled as at 100 and has a bore 101 leading therefrom and opening against the outer surface of the tubular crank gear shaft 11. A passage 102 leads forwardly from the outer end of the chamber and opens into the casing-13, a tube 103 being inserted therein to carry lubricant to a point above the mechanism in the casing. Adjacent the outer end of the channel 100 and leading from the longitudinal assage 102| is a vertical passage 104 extending through the bushing or sleeve 12 adapted to deliver oil at a midpoint of the crank gear journal 11, and the outer portion of the bore of the sleeve is longitudinally grooved at the top as at 105 to provide a path for lubricant leading to the forward end of the journal. The casing 13 adjacent the bottom is bored horizontally as at 106 and the frame correspondingly bored as at 107 in alignment withthe rst mentioned bore to provide a continuous passage from the casing to the com artment 70, formed within the rear end o the frame adjacent the main reservoir 5, with which chamber 70 communicates through an elongated opening 109 shown in Figs. 1 and 2.

The crank gear bushing isfurther provided at its inner end face with a depression 110 the circumferential wall of whichl is undercut as at 111 to provide a lubricant catch channel from the lowermost point of which a cross bore 112 leads downwardly towards and opens into the chamber 70. A vertical bore 113 leads, upwardly from the lower part of the casingl 13 through which lubricant may fiow through openings in the casing 113 and main frame immediately below the crank gear bushing 12.

Bores 115 lead downwardly from the work faces of the ram guides at each of the four corners, and bores leading from one of the guide faces are respectively intersected by A bores 116 extending downwardly and inwardly from the top of the frame, these latter bores being closed "at the top by a screw threaded plug and being connected at their bottoms by pipes 120 with respective passages of the relay reservoir. One bore leading from the work face at one end of one guide intersects a vertical bore 117 leading downwardly from the top face of the frame which bore is connected by the tube 120 with one of the passages 45 of the relay reservoir. The tubes leading to the various stations and parts pass from the interior of the frame through an aperture 125. The faces of the slides are further grooved diagonally as shown at 121, in Fig. 2, at each side of and .communicating with the bores, thus providing passages whereby lubricant may be forced to the faces of the slides.

A gib 130 is interposed between the ram and guide and is bored cross-wise as at 131 in Fig. 12, and the gib face is grooved as at 132 and the groove in said face registers both' with the transverse groove and with the corresponding lubricant receiving passage whereby lubricant is delivered to slide and gib faces.

The reservoir for delivering lubricant to the nut, link and pitman may be of more simple structure if it is desired to deliver oil by gravity in the ordinary manner and where it is not desired to interrupt the, oil flow as soon as the machine is stopped. In such a case the telescopic arrangement is used substantially in the same manner except that the pipe is connected at the bottom of a reservoir preferably of greater cap pacity than the small relay reservoir.

In this system of complete lubrication, however, the smaller relay reservoir is provided in order to cut oft1 the oil supply to the parts as soon as the machine stops and for this purpose a force pump is used and, as before stated, is mounted in the reservoir 5 and operated through thegear 7 mounted on the shaft 6 as one of the elements of transmission and speed change gearing for transmitting the crank'gear.

The pump is disposed at the lowest part of the lubricating system, and is herein attached to and completely housed within the main frame, and separately within the compartment 5 provided Within the frame for the transmission and speed ychange mechanism for driving the crank gear.

This compartment, as before mentioned, is formed by sub-dividing the rear end of the frame by partitions which are integral with the walls of the frame. The speed and transmission gear is not herein shown because it forms subject matter of applicants co-pending application for improvements in Shapers filed July 21, 1922.

The pump, however, is adapted to be drivon whenever the Shaper is in operation through one of the gearing driving shafts 6 mounted within the compartment, to which shaft is keyed a driving worm wheel 7. The com artment 5 forms a main lubricant receiving and distributing reservoir into which surplus oil, drained from certain parts of the machine, is received and from which the oil is pumped to other parts of the machine, the used oil being replaced by refilling. The

oil within the casing normally lies at such level as to assure lubrication of various parts therewithin, and the gears, not shown, di into or run in the lubricant.

he pump is of the reciprocating plunger ty e and has the form of a castlng having a bo y portion 140 adapted for vertical disposal during operation, providing a central lunger receiving bore 141 of relatively ar'ge diameter, and two bores 144, 145. each of less diameter are disposed laterally of the larger bore. Each bore is connected at its inner end with the plunger bore respectively by cross-passages 142, 143, one of which, 142, the inlet, intersects an axlal counter bore 146 of the plunger bore, a conical seat 147 being formed at the intersection of the bores against which is seated a gravity actuated ball valve 148 of less diameter than the plunger bore adapted to close the lntake passage when the pump is discharging. The cross-passages are disposed at right angles to the axes ofthe intake and discharge passages and intersect respective passages as well as the lunger bore. Each cross-passage is close at its outer end by a suitable thread lug. The inlet end of the intake passage is disposed at the upper side of the pump and when the pump is operatively attached Within the reservoir it is ada ted to lie just beneath the surface of the ubricating bore to prevent entrance of sediment.

The intake and discharge passages, are parallel with the plunger bore in one plane but inclined thereto in another plane the upper end of the discharge passage lying at one side of the shaft 6, in a readily accessible osition from a point outside the Shaper graine.

The pump casing is bored concentric with the discharge passage to provide a valve chamber 150 within which is a gravity actuated ball valve 151 of less diameter than the counterbore, adapted to fit a conical seat 152 at the intersection of the bores to prevent back flow during the intake stroke of the ump. The end of the pipe line 153 leadmg to the relay distributing reservoir at the top of the machine has threaded connection with the discharge passagebf the pump, as at 154.

A stub shaft A155 is rotatably, horizontally supported at one end in a bearing 156 upon the top of the pump casing, and has keyed upon its projecting end a gear 157 meshed with the companion gear 7 upon the drive shaft 6. Beyond and adjacent the gear is keyed a cam 158 having the form of an eccentric sleeve overlying and engaging the upper. end of the plunger 159 reciprocable in the bore 141. The plunger at its upper end has a circumferential flange 160 forming a shoulder between which and the top of the pump body is interposed a coiled ex'- pansion spring 161 adapted to urge the recaer@ of the plunger'against the action of' the re traction spring. Upon the discharge stroke of the plunger the ball valve 148 closes and the valve 151' opens, the valve action being reversed upon the intake stroke.

Integral with and extending laterally from the pump body is an attachment arm 165 adapted to-be fastened to the vertically disposed lug 166 adjacent the assembly opening 167 of the frame, which opening is closed by a suitable outwardly dishedcover 168.

The pump when attached has its passages substantially vertically disposed, the parts being readily accessible for repair or adjustment from the outside of the frame. Moreover, the pum is adapted for operation by one of the mam drive shafts of the machine which shaft isin operation whenever the machine is in operation, thus insuring the operation of t e ump for supplying lubricant exactly an only when needed. l

Having described my invention, I claim:

1'. In a lubricating system, the combination with a machine having bearings, of an oil reservoir at a low-elevation, an oil distributing reservoir at an elevation above the bearings, a pump for elevating oil from the said low elevation reservoir to the distributing reservoir, an overflow duct com-f municating with the distributing reservoir for maintaining a normal oil level in said distributing reservoir during the operation of the pump, and draining the same when the pump operation ceases, said overflow duct directing the oil for return to said low elevation reservoir, oil distributing ducts cornmunicating Withsaid distributing reservoir at an elevation above the overow duct, and leading to respective bearings, and a siphon wick respectively for each of said distributing ducts, engaged into the duct and distributing reservoir for supplying a slow or drip feed to said distributing ducts.

2. In a lubricating system, the combination with a machine having bearings, and a plurality of transmission housing and loil holder compartments having oil drainage connection, one compartmentl thereof at a low elevation, providing a reservoir, an oil distributing reservoir at an elevation above the bearings and compartments, a pump for elevating oil from reservoir of said low elevation compartment to the distributing reservoir, an overflow duct communicating with the distributing reservoir for maintaining a normal oil level in said distributing reservoir during the operation of the pump, and draining thesame when the pump operation ceases, said overflow duct directing the oil for return through the transmission compartments to said compartment reservoir, oil distributing ducts communicating i with said distributing reservoir at an elevation above the overflow duct and leading to .respective bearings, and a siphon wick respectively, for each of said distributing ing reservoir, lubricant distributing ducts communicating with said distributing reservoir, and a Siphon wick respectively for each of said distributing ducts, engaged into the duct and distributing reservoirs for supplying a slow or drip feed to said distributing ducts, the continuity of said distributing ducts broken beneath the base of said distributing reservoir to provide a sight chamber.

4. In a lubricating system, the combination with a machine having bearings of an oil reservoir at a low eleva-tion, an oil dis- Atributing reservoir at an elevation above the bearings having an overflow providing a return drain to said low eleva-tion reservoir, and ducts for leading oil by gravity to the respective bearings, siphon wicks in said ducts and reservoir for supplying a slow or drip feed to said ducts, a support for said distributing reservoir, providing a head for mounting oil distributing conduits in a spaced relation'and respective alignment with said ducts and forming a sight space therebetween, transparent means interposed between said reservoir and support head and forming a sight chamber.

5. A lubricating system comprising an upper distributingreservoir of small capacity having outlets at different levels, an inlet at a lower level, said outlets adaptedto deliver by gravity through the bottom of the reervoir, a relatively smaller passage leading from the 4bottom of the reservoir into one of the outlets, a supply reservoir below said distributing reservoir, and means for forcing liquid upwardly to said distributing reservoir.

6. A lubricating device comprising superposed reservoirs, the upper having a passage for delivering fluid thereto at a level above its bottom, vertically aligned delivery passages in said upper and lower reservoirs, the upper adapted to drop fluid into the lower when the upper reservoir overflows through its passages, and Siphon-like wicks having their legs extending respectively into said upper reservoir and into certain of the delivery passages therein, for-drawing relatively small amounts of lubricant from the upper reservoir into those passages.

7. AA lubricating device comprising superposed closed reservoirs, a glass annulus interposed between said reservoirs and sealingly engaged therewith to provide a circumferential' window, a passage for delivering fluid into said upper reservoir, delivery passages in said upper and lower reservoirs vertically aligned, the passages in the upper reservoir opening therewith at different levels and adapted to deliver fluid into the lower, and wicks extending into those passages at Ahighest level for siphoningr small quantities of' lubricant from the upper reservoir into certain of the passages, and a drain opening leading from the bottom of the reservoir and intersecting one of the non-wick containing overflow passages.

8. In a device of the class described, a frame, a ram thereon, a pitman pivoted at the lower end of saidframe, a link pivoted at opposite ends respectively to the upper end of said frame and ram, said ram, pitman and link having passages therethrough for conveying lubricant from the ram to the pitman and link, a. chamber in said ram in communication with the ram passage, a reservoir upon the frame and a tube leading from the reservoir yto said chamber having a sealing telescopic engagement therewith and in communication 'through said chamber with said passages.

9. In a device of the class described, av frame, a ram reciprocable thereon, a pitman pivoted to said frame, a link connecting the upper end of the pitman with the ram, said ram, link and pitman having communieating oil passages therethrough for conveying lubricant to the parts to be lubricated, a chamber upon said ram parallel therewith communicating with the ram passage, a reservoir upon the frame and a tube leading from the reservoir to said chamber engaged telescopically therewith and adapted to deliver lubricant through said chamber and into said passages.

10. In a device of the class described, a frame, a ram reciprocable thereon, a pitman pivoted at its lower end to the frame` lll() a link pivoted at one end to the upper end v of the pitman and at its opposite end to the ram, said link having a groove in its upper side and passages leading therefrom tothe pivots of the link, a passage in said ram leading to the groove, a chamber in said ram communicating with said passage, a reservoir upon the frame and a tube leading from the reservoir having sealing telescopic engagement with the chamber for delivering oil through the chamber to the ram passage during reciprocation of the ram.

11. In a machine of the class described, a frame, a ram reciprocable thereon, mechanism for reciprocating the ram, communieating ducts leading from the ram through the reciprocatin mechanism, a chamber on the ram parall therewith communicating with said ducts, a reservoir on the frame, and a delivery tube leading from the reservoir having a sealing telescopic engagement with the chamber to form therewith a continuous delivery passage to the ducts.

12. ln la device ofthe class described, a frame, a ram reciprocable thereon, a pitman pivoted at its lower end in said vframe, a shackle block on said ram, a link pivoted at relatively opposite ends respectively to said block and the upper end of said pitman, passages leading from the upper side o the lock through the block across the link to said pitman, a tubular member-upon the ram communicating with said passage and closed at one end, and a second tube sealingly telescopically engaged within said tubular member, of substantially less diameter than the member and opening into the member and a reservoir connected with the opposite end of said tube, the connection being at a point above said ram.

13. A reservoir having a vertical intake passage opening at a level therein above the bottom, a vertical overflow passage opening at a level above the vertical intake passage, a drain passage leading from the bottom of the reservoir in the said overflow passage, a delivery passage opening at a level above the other passages having an enlarged upper bore portion and a lower smaller bore portion, a shoulder being formed at the intersection of the bore portions, a wick inserted in the last mentioned passage having a terminal knot of less diameter than the passage and engaged against the shoulder at a point below the level of the bottom of the reservoir, said wick also extending into said reservoir to a point above its bottom, and means attached to the wick and extending through the passage for holding the same in position.

14. A reservoir having vertical intake and overflow passages opening at a level above the bottom of the reservoir, a drain passage leading from the bottom of the reservoir into said overflow passage, a delivery passage at a level above the other passages, and awick therein having one end extending to a point below the level of the bottom of the reserbore portion and a lower smaller bore portion, a shoulder being formed at 'the intersection of the bore portions, a wick inserted in the last mentioned passage having a knot therein of less diameter than the passage and engaged against the shoulder, said wick alsoA extending into said reservoir to a point above its bottom, and means attached to the wick and extending through the passage for holding the same in position.

16. A reservoir having a vertical intake passage, opening at a level above the bottom thereof, a vertical overflow passage opening at a level above the said intake passage, `a drain passage leading from the bottom of the reservoir into said overflow passage, a delivery passage opening at a level above the other passages and a Siphon-like wick eX- tending into the last named passage and into the reservoir with the end in thepassage below the level of the end of the reservoir.

17. A lubricating system for machine tools, .a frame, a reciprocating ram slidably mounted in said frame, a pitman for reciproeating said ram, a link horizontally disposed connecting said ram and pitman, crank gearingfor operating said pitman, an eX- tensible conduit, connected to said frame and ram and communicating with a passage in the ram leadingto pivotal connection of the link with said ram, for feeding a liquid lubricant to said pivot, said link being provided with a channel for conveying the liquid lubricant past the connection of the link with the ram to the connection with the pitman and distributing the lubricant to the pitman connections below said link.

In witness whereof, I hereunto subscribe my name.

' ROBERT T. HAZELTON. 

